pendulum rod摆锤杆pendulumn.摆锤；钟摆；摇摆不定pendulum type friction machine摆锤式摩擦试验机pendulum type artificial heart摆型人工心脏, 摆型人造心脏pendulum-type impact machine摆式冲击试验机pendulum impact testing machine摆锤式冲击试验机,摆式冲辉验机pendulum-type mechanical rake摆式耙路机pendulum intermediate suspension引摆杆pendulum type ring roll pulverizer摆式磨粉机